Re: [PATCH v3] mm/vmalloc: lock contention optimization under multi-threading

rulinhuang
2024-02-22T12:07:50Z

Hi Uladzislau and Andrew, we have rebased it(Patch v4) on branch
mm-unstable and remeasured it. Could you kindly help confirm if
this is the right base to work on?
Compared to the previous result at kernel v6.7 with a 5% performance
gain on intel icelake(160 vcpu), we only had a 0.6% with this commit
base. But we think our modification still has some significance. On
the one hand, this does reduce a critical section. On the other hand,
we have a 4% performance gain on intel sapphire rapids(224 vcpu),
which suggests more performance improvement would likely be achieved
when the core count of processors increases to hundreds or
even thousands.
Thank you again for your comments.